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6 FAQs about [What are the high-efficiency solar energy materials ]
Why do large-area photovoltaic systems need high-efficiency solar cells?
Because the cost of photovoltaic systems is only partly determined by the cost of the solar cells, efficiency is a key driver to reduce the cost of solar energy, and therefore large-area photovoltaic systems require high-efficiency (>20%), low-cost solar cells.
How to achieve high efficiency of solar cells?
High efficiency can be achieved by optimizing these factors. 3.3.1.2. Influence of imperfections on diffusion length and mobility Surface integrity, grain boundaries, and defect concentration all affect the charge transportation and thus efficiency of the solar cells.
What is the highest-efficiency thin-film solar cell material?
The record efficiency of Cu (In,Ga) (Se,S) 2 (CIGS) thin-film solar cells has steadily increased over the past 20 years, with the present record value at 21.7% (9, 20), making it the highest-efficiency thin-film solar cell material to date, very closely followed by CdTe at 21.5% (9, 21).
Why is efficiency important in photovoltaic systems?
The rate of development and deployment of large-scale photovoltaic systems over recent years has been unprecedented. Because the cost of photovoltaic systems is only partly determined by the cost of the solar cells, efficiency is a key driver to reduce the cost of solar energy.
What are promising materials for solar cells?
Promising materials in this context include organic/polymer compounds, colloidal quantum dots, and nanostructured perovskites. The development of new materials utilized in active layers for solar cells has been a topic of interest for researchers, such as organic materials, polymer materials, colloidal quantum dots, and perovskites.
What type of solar cells are used in solar energy production?
Currently, the dominant PV productions are homojunction c-Si solar cells, mainly including aluminum back surface field (Al-BSF) cell and passivated emitter and rear cell (PERC), occupying a market share of 40% and 50% in 2019, respectively .